JPH0663080A - Air mat - Google Patents

Abstract

PURPOSE:To provide the air mat which can be used comfortably by a bedridden patient to whom it is difficult to set pressure of the mat, and also, improves its use convenience, and moreover, is scarcely damaged. CONSTITUTION:The air mat is constituted so that pressure of the mat is set in advance by a pressure setting circuit 11, an operation of a pump 2 is controlled by a pump control circuit 12 so as to always become set pressure, and also, when pressure exceeding the set pressure is detected by a pressure detecting part 9, the pump 2 is controlled so as to become temporarily lower than the set pressure, and controls it so as to decrease the quantity of air to be fed in.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air mat for preventing bedsores used in hospitals and the like.

[0002]

2. Description of the Related Art This type of air mat is disclosed in Japanese Patent Laid-Open No. 2-277972.
Those disclosed in Japanese Patent Publication (F04B 33/00) and the like are generally known.

Explaining the state of use, the air discharged from the air mat inflator A is supplied to the floor mat preventing air mat M through the air supply pipe 14 and fed into the air mat M at a predetermined air discharge amount to a constant pressure. Air mat M swells. In general, the air mat M has a plurality of air outlets, and the air outlets allow the air entering from the air container A to escape little by little so that the air mat M always inflates with a constant hardness. In addition, the air inflator A has a pressure adjusting knob 13 for adjusting the amount of air sent into the air mat M, that is, the hardness of the air mat.
The pressure adjusting knob 13 can adjust the amount of air to be sent by leaking a part of the air entering the air mat M from the inflator A.

When the user rides on the air mat M with the air mat M inflated, the air outlet is blocked by the user and the weight of the user is applied from above the air mat M. Since it feels harder than the set hardness, the user once reduces the amount of air discharged from the air pump 2 by the pressure adjusting knob 13 to soften the air mat M, and then gradually to the desired hardness. The adjustment method was to make the air matte M hard.

When the user does not operate as described above, the air mat M is used in a stiff state, and the air mat M is left in that state until the air naturally escapes from the air outlet and the air mat M has a desired hardness. I was using it.

However, in the above air mat, the user is usually a bedridden patient,
It is difficult to even adjust the pressure adjustment knob, and if it cannot be adjusted, you have to wait for the air to exhaust from the air outlet until the pressure reaches the set pressure, and the uncomfortable state lasts for a long time. However, there is a problem that it is not suitable for usability or is unsuitable for such a bedridden patient.

In addition, there is a possibility that a part of the mat will be gradually broken when the user rides on the mat in the condition that the initially set hardness is relatively high.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air mat which is comfortable and easy for a user who is a bedridden patient to use, and is not easily damaged.

[0009]

According to the present invention, there is provided a pump for sending out air, a mat for enclosing air from the pump and discharging it from an air outlet, and a pressure detecting section for detecting the air pressure of the mat, A pressure setting circuit that sets the pressure of the mat in advance and a pump control circuit that can control the amount of air discharged from the pump according to the pressure setting circuit are provided.

Further, when the pressure detecting section detects a pressure exceeding the set pressure, the pressure of the mat is once made lower than the set pressure, and then the pump is controlled by the pump control circuit so as to reach the set pressure. It is characterized by doing.

[0011]

The pressure of the mat is set in advance by the pressure setting circuit, the pump control circuit controls the pump based on this set pressure, the air compressed by the pump is sent into the mat, and the mat expands at a constant pressure. At the same time, air is released from the air outlet to maintain a predetermined hardness. The air pressure of the mat at this time is detected by the pressure detection unit, and the pump is constantly controlled according to the fluctuation of the pressure.

Further, when the pressure detecting section detects a pressure exceeding the set pressure, such as when the user rides on the mat, the amount of air sent from the pump is adjusted so as to be once lower than the set pressure. It is controlled by the pump control circuit.

[0013]

An embodiment of the present invention will be described in detail below with reference to the drawings.

Reference numeral 1 denotes a main body containing a pump 2 capable of compressing and sending air, and the air sent from the main body 1 is supplied to an air supply pipe 4 connected to a discharge port 3 provided in the main body 1. It is connected to the mat 5 via. A plurality of air discharge ports 6 are provided on the surface of the mat 5, and the air discharge ports 6 are for discharging the air sent from the pump 2 little by little from the mat 5. In addition, the air discharged from the air discharge port 6 also acts to prevent the patient lying on the mat 5 from rubbing the floor.

Reference numeral 7 is a container for deodorizing or aromatizing the air sent from the pump 2 to the mat 5, and it can be performed by putting a deodorant or an aromatic in the container 7.

Reference numeral 8 denotes a pressure setting knob capable of presetting the hardness of the mat 5, and the pressure setting knob 8 is set to a desired hardness by the user before use.

Reference numeral 9 denotes a pressure detection unit for detecting the pressure of air in the mat 5, that is, the hardness of the mat 5, and the pressure detection unit 9 converts a pressure signal of a pressure sensor or the like into an electric signal. The element that can be used is used.

Reference numeral 10 is a power cord for operating the pump 2 and the like.

Next, the operation circuit will be described with reference to FIG.

Reference numeral 11 is a pressure setting circuit for presetting the hardness of the mat 5, and the pressure setting circuit 11 converts the value set by the pressure setting knob 8 into an electric signal and outputs it.

Reference numeral 12 denotes a pump control circuit capable of controlling the number of revolutions of the pump 2, and the pump control circuit 12
Operates based on the set pressure of the pressure setting circuit 11 so as to fill the difference from the actual measurement value detected by the pressure detection unit 9.

Further, when a person rides on the mat 5 in a state where the mat 5 is inflated at the optimum pressure, the pressure of the mat 5 is momentarily increased by the pressure detector 9 as shown in FIG. 3B. Go up. At this time, the pump control circuit 12 lowers the rotation speed of the pump 2 so that it is lower than the set pressure of the mat 5, and thereafter, it is controlled so as to gradually reach the set pressure.

Reference numeral 13 is a power supply circuit for supplying power to the pump 2 and each circuit.

Next, the operation will be described.

The main body 1 and the mat 5 are connected by the air supply pipe 4, and the pump 2 is operated so that the pressure set by the pressure setting knob 8 is reached to inflate the mat 5.
By ejecting a small amount of air from the air exhaust port 6 on the upper surface of the mat 5, the mat 5 is prevented from being damaged and the patient lying on the mat 5 is prevented from rubbing the floor.

In use, the deodorant in the container 7
Alternatively, the odor of the air blown out from the air discharge port 6 can be eliminated or fragranced by adding an aromatic agent or the like.

The state in which the mat 5 swells will be described. First, the mat 5 is set to a desired hardness by the pressure setting knob 8. Then, according to the set pressure, the pump 2 is operated by the pump control circuit 12, and the mat 5 is inflated. At the same time, the pressure exerted on the mat 5 by the air in the mat 5, that is, the hardness of the mat 5, is detected by the pressure detection unit 9, and the pump 2 operates until the set pressure is reached. When the mat 5 reaches the set pressure, the pump 2 is controlled by the pump control circuit 12 so as to keep this pressure constant. At this time, as in A of FIG. 3, the pressure in the mat 5 rises until it reaches the set pressure.

Next, in this state, the case where the user sleeps on the mat 5 will be described.
At the moment of getting on, as shown in FIG. 3B, a pressure equal to or higher than the set pressure is applied to the inside of the mat 5, and this is detected by the pressure detection unit 9
Is detected, the pump control circuit 12 operates so that the rotation of the pump 2 is once lower than the set pressure, and then controls it to reach the set pressure. By controlling in this way, compared to the conventional manual operation, it takes less time and effort to set the pressure, and since it operates automatically, it is easier to use. In addition, the air discharge port 6 is set to the set pressure without manual operation.
The set pressure can be reached in a very short time compared to the case of waiting for the air to escape from.

Further, when the pressure setting knob 8 is set to be stiff and the user rides on the mat 5, it takes time until the set pressure is reached in the conventional case, and excessive pressure is applied to the mat 5 for a long time. However, in the configuration described above,
Since the pump control circuit 12 operates the pump 2 so that the pressure is once lower than the set pressure, the time that the excessive pressure is applied to the mat 5 is shortened.

With the above-mentioned structure, it is convenient for a bedridden sick person and the mat 5 can be set to the set pressure in a short time, so that it is comfortable.

Further, since the mat 5 can be set to the set pressure in a short time, there is an effect that the mat 5 is not easily damaged without being applied with an excessive pressure for a long time.

[0032]

INDUSTRIAL APPLICABILITY The present invention makes it possible for a bedridden patient whose pressure is difficult to set, to comfortably use because the pressure adjusting knob does not have to be adjusted to a proper pressure in a timely manner. Since it can be automatically adjusted, it is easy to use. Further, even if a sudden pressure is applied to the mat, the pressure once becomes lower than the set pressure and then returns to the set pressure, so that the mat is less likely to be damaged.

[Brief description of drawings]

FIG. 1 is a block diagram of a control circuit of an air mat according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of the same.

FIG. 3 is a view showing a pressure change of the mat.

[Explanation of symbols]

 2 Pump 6 Air outlet 5 Mat 11 Pressure setting circuit 12 Pump control circuit 9 Pressure detector

Claims (2)

[Claims] 1. A pump for sending out air, and a mat for enclosing the air from the pump and exhausting it from an air outlet, a pressure detector for detecting the air pressure of the mat, and the pressure of the mat is set in advance. An air mat, comprising: a pressure setting circuit; and a pump control circuit capable of controlling the amount of air discharged from the pump according to the pressure setting circuit. 2. The pump control circuit controls the pump so that when the pressure detecting unit detects a pressure exceeding a set pressure, the pressure of the mat is once made lower than the set pressure and then becomes the set pressure. The air mat according to claim 1, wherein